Tender, savory lentils paired with cooked peppers and cilantro converts this dish from a bland bean salad to a delectable and healthy meal. Use any combination of sweet bell peppers you like: green, red, yellow, and purple.

Prepare the salad up to 1 day ahead, and store in the refrigerator. If you can't find fresh cranberry beans, substitute rinsed and drained canned cannellini beans, and add them to the snap beans for the last 2 minutes of cooking.